.app-footer {
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
  color: #ffd700;
  margin-bottom: 1rem;
}

.footer-section h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

.footer-section h4 {
  font-size: 1.2rem;
  font-weight: 500;
}

.footer-section p {
  line-height: 1.6;
  opacity: 0.9;
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin: 0.5rem 0;
  opacity: 0.9;
}

.footer-section a {
  color: white;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: #ffd700;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1rem;
  text-align: center;
  opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .app-footer {
    padding: 2rem 0 1rem;
  }
  
  .footer-container {
    padding: 0 1rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
} 